The process characteristics of quantitative mixing of balanced nutritional salt and the measuring and controlling point of its control system,the control structure of lower host,the control principle and the software structure are introduced briefly.

It also points out that the factors affecting smelting process are un- der the follows,such as,grain size of raw material,burden weighing and mixing etc.

This paper expounds the working principle and adjustment methods of automatic charge mixture computation controll circuit,which may be used in the charge mixture and material computation production flow of cement building materials and construction,providing some effects,such as simple str.